From: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx> [ Upstream commit 72d24955b44a4039db54a1c252b5031969eeaac3 ] When new veth is created, and GSO values have been configured on one device, clone those values to the peer. For example: # ip link add dev vm1 gso_max_size 65530 type veth peer name vm2 This should create vm1 <--> vm2 with both having GSO maximum size set to 65530. Signed-off-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> --- drivers/net/veth.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/veth.c b/drivers/net/veth.c index f5438d0978ca..a69ad39ee57e 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -410,6 +410,9 @@ static int veth_newlink(struct net *src_net, struct net_device *dev, if (ifmp && (dev->ifindex != 0)) peer->ifindex = ifmp->ifi_index; + peer->gso_max_size = dev->gso_max_size; + peer->gso_max_segs = dev->gso_max_segs; + err = register_netdevice(peer); put_net(net); net = NULL; -- 2.14.1